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Question

An ideal gas is taken from point A to point C on P-V diagram through two process AOC and ABC as shown in the figure. Process AOC is isothermal



Correct Answer
A
Process AOC requires more heat than process ABC.
Your Answer
B
Process ABC requires more heat than process AOC.
Your Answer
C
Both process AOC & ABC require same amount of heat.
Your Answer
D
Data is insufficient for comparison of heat requirement for the two processes.

Solution

The correct option is A Process AOC requires more heat than process ABC.

Δ U is the same in both the processes. But WAOC > WABC (area under the curve)
Since Q = Δ U + W from Iaw
QAOC > QABC

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